Printing-press



(No Model.) V

' C. B. COTTRELL.

'Plmlubwfl PRESS.

No. 314,166. PatentedManl?, 1885.

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PRINTlNG-PRESS.

,CRBPBCIFIGATIQN forming part o Letters `Patent No. 31%,166fdatedFEal'clll 17', 1885.

.Application tllrd October 1 lSSS. (Yo model.)

.To @ZZ whom t www] con/cern.:

Be it known that I, CALVERT B. COTTRELL, a citizen of the United States,and a resident of Stonington, in the county of New London and State ofConnecticut, have invented a new and useful Improvement inPrinting-Presses, of which the following is a specification, referencebeing had to the accompanying dra-wings.

My invention relates to the feed gages which are used in stop-cylinderprinting-presses, and which, once for every revolution of the cylinder,have imparted to them a movement which causes them to be projectedbeyond the periphery of the cylinder and to be withdrawn within thecylinder.

The invention consists in the combination, with the impression-cylinderand feed-gages, of novel means, particularly hereinafter described, andpointed outl in the claims, whereby the feed-gages are supported andhave imparted to them the necessary movements.

The invention also consists in the combination, with theimpression-cylinder of a stopcylinder printing-press and tympan-nippersattached thereto, of feed-gages movable inward and outward within andfrom said cyl. inder, and a stop-bar attached to said nippers to serveas a stop to said gages, as fully hereinafter described.

Figure 1in the drawings is a side view of the cylinder of astop-cylinder printing-press and such other parts of the said press as'are necessary to illustrate my invention. Fig. 2 is a front view of apart of the cylinder and immediately adjacent parts corresponding withFig. 1. Fig. 3 is a longitudinal section corresponding with Fig. 2. Fig.4 is a front view of one of the gages, on alarger scale than Figs. 1,2,3. Fig. 5 is aside viewcorresponding with Fig. 4, but showing also themeans of stopping the gages in proper position.

.A represents a portion of one of the side frames of the press'.

B is the cylinder, which is intended to be provided with grippers,which, as they may be mounted in the usual manner within the recess a.,I have not considered it necessary to represent.

C is the feed-board.

b is a rock-shaft, on which are mounted the `feed-gages c, of whichthere may be two or more, but of which only one is shown'. This shaft isarranged parallel with the axis of the cylinder within thegripperrecessa, where it 5 5 is supported in bearings provided on or attached to thearms of t-he cylinder. The gages c are not attached directly to thisrock-shaft b, but each is attached to one ofthe arms d of a secondrock-shaft, e, which is arranged par- 6o allel with I in bearings inarms f, which are aflixed to the latter, and of which there should be atleast two, one to support each end of said rockshaft e.

On the rock-shaft c is afiixed another arm,

g, on which is an anti-friction roller, n, which is opposite a cam, h,affixed to one of the arms of the cylinder, and on the rock-shaft bthere is alixed outside ot'` the cylinder an arm, t', which carries anantifriction roller, s, situated 7o -oppositeto a cam-lever, E, whichworks on a fixed fulcruin, j, 'secured in a bracket, F, atl tached tothe side frame, A. The rock-shaft b has applied to it a coiled spring,7g, which tends to turn it in adirection to draw its arms f toward thecenter of the cylinder and so withdraw the feed-gages c within thecylinder, as shown in dotted outline in Fig. l, and the rock-shaft c hasapplied to it a coiled spring, l, which tends to turn it in a direction8o to draw the feed-gages away from the edge a of the gripper-opening aof the cylinder; but this spring Z might be dispensed with by a properconstruction of the cam h.

rIhe operation of projecting the feed-gages beyond the periphery of thecylinder at the proper time for feeding the sheet to thecylinder isproduced and controlled by the cam-1e*- ver E, assisted by the spring 7aor springs k Z, and the cam h. The cam-lever E might have the necessarymotion for this purposeimparted to it in various ways; but in theexample represented the said motion is derived through a rod, G, from acam, H, on the side shaft, I, which is common to many stop cylinder 95presses. The operation takes place after the cylinder has stopped in theusual position to take the sheet, and while it is stationary, and is asfollows: The cam-lever E, acting the said arm, and raises the arms f,the

rock-shaft e, and the gages, and as the gages upon the arm i of therock-shaft b, depresses rise from the cylinder the roller n, of the armg of the rock-shaft e, by passing up the am h, is caused to be thrownforward, and the gages are caused to be thrown back toward the edge aofthe gripper-opening, all as shown in bold outline in Fig. 1.Immediately after the cylinder starts7 the roller S passes out of theWay of the cam-lever E, and the springk turns the rock-shaft b in adirection to depress the arms 1o j" and rock-shaft e, and so cause thegages c to be Withdrawn entirely within the cylinder7 so that they willnot interfere with the printing, and will permit the edge of thefeed-board to be arranged as close as may be desirable to the cylinder.The feed-gages themselves may be of any suitable form and constructionthat will enable them to properly stop the front edge of the sheet.VThose represented consist each of a flatV plate, which is fastened to aange, d', on the upper end of its carryingarm d, and on the upper faceof which is a projection made with a lip, C', under which the edge ofthe sheet passes7 and against the portion G2 of which, below said lip,the sheet is arrested, the upper surface of the plate C being broughtiiush, or nearly so7 with the periphery of the cylinder, as shown inbold outline in Fig. l, when the gage is brought up to its operativeposition. Provision for adj usting the gagesforward or backward on thearms d is afforded by providingslots in the gages and securing them tothe said arms by screws m,} )assingthrough said slots and screwing intothe said arms. The gages, when In the example represented this stopconsists of a bar, t, which is attached firmly to the front ofthetympan-nippers p, which are attached to the cylinder in the usualmanner, and the arms d are provided with projections q, to come againstthis stop. This makes a more solid bearing and positive stop than if thegage were to stop against the pack-A ing which laps over the edge 'a' ofthe gripperopening ofthe cylinder.

The gages7 instead ofbeing arranged to move inward and outward Withinand from the cylinder with a swinging motion, as described, might bearranged t0 Work in and out rectilinearly under the control of slides orguides.'

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination, with the cylinder B, of the rock-shaft b, havingarms f and fi', the rock-shaft e, supported in said arms f, and

having arms d g, the feed-gages attached to C. B. COTTRELL.

Witnesses:

FREDK. HAYNEs, En. L. MORA-in.

